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| Phone | Samsung SCH-U550 | ZTE Z431 / Altair |
| Current U.S. Carriers | (none) | (none) |
| Global Availability | Released | Released |
| Specifications | ||
|---|---|---|
| Display Size |
2.1" diag. 4 : 3 |
2.4" diag. 4 : 3 |
| Display Resolution & Type |
176 x 220 pixels (~134 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? |
| Battery | 800 mAh | 1,000 mAh |
| Processor | ? | ? |
| RAM | ? | ? |
| Storage | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 2 megapixel |
| Wide Camera | - | - |
| Tele Camera | - | - |
| Video Capture | ? | QVGA (320 x 240) |
| Front Camera | - | - |
| Weight |
3.17 oz (90g) |
3.52 oz (100g) |
| Dimensions |
3.76" x 1.92" x 0.68" (96 x 49 x 17.3 mm) |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
| Form Factor | Clamshell | Slab |
| Platform / OS | (proprietary) | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | EVDO r0 | ? |
| Features | ||
| GPS / Location | Yes | Yes |
| Accessibility | ||
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | Yes |
| TTY/TDD (Digital) | - | Yes |
| Alerts | ||
| Extra Display | Yes | - |
| Ringer Profiles | - | Yes |
| Connectivity | ||
| Bluetooth | Yes | Yes |
| USB | - |
Yes Micro-USB |
| Contacts | ||
| Picture ID | Yes | Yes |
| Ringer ID | Yes | Yes |
| Voice Dialing | Yes | - |
| Customization | ||
| Custom Graphics | Yes | Yes |
| Custom Ringtones | Yes | Yes |
| Real-Music Ringers | Yes | Yes |
| Data & Network | ||
| Data Tethering | Yes | Yes |
| WAP / Web Browser | Yes | Yes |
| Input | ||
| Predictive Text Entry | Yes | Yes |
| Side Keys | Yes | Yes |
| Text Keyboard, Hardware | - | Yes |
| Memory | ||
| Memory Card Slot | Yes | Yes |
| Messaging | ||
| Email Client | - | Yes |
| EMS / Picture Messaging | Yes | - |
| MMS | Yes | Yes |
| Text Messaging Templates | Yes | Yes |
| Music | ||
| Headphone Jack (3.5mm) | - | Yes |
| Music Player | Yes | Yes |
| Productivity | ||
| Alarm | Yes | Yes |
| Calculator | Yes | Yes |
| Calendar | Yes | Yes |
| Voice Memo | Yes | Yes |
| Software | ||
| BREW | Yes | Yes |
| Games | Yes | Yes |
| Voice | ||
| Headset Jack (2.5 mm) | Yes | - |
| Speaker Phone | Yes | Yes |
| Samsung SCH-U550 | ZTE Z431 / Altair | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SCH-U550 | ZTE Z431 / Altair |
